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Under the Terran Confederacy, supply depots were standard for military bases and possessed a universal design.[2] This design was that of a low, one-story, metal-clad structure, a spacious waiting area and a counter separating said area from the storage racks on the other side.[3] Such storage includes weapons, ammunition and even SCVs.[4]

The supply depot is by far one of the most important buildings in the terran tech tree. Similarly to the pylon (protoss) or the overlord (zerg), it provides "supply points" which allow for the construction of new units. Unlike overlords and pylons, however, it does not have any additional abilities.

In addition to providing supply in StarCraft II, the depot gains the ability to lower and rise from the ground. When lowered ground units may pass over it. Unlike the Perdition turret, it is not considered burrowed or hidden when lowered.

Lowers the structure into the ground so ground units may pass over it. The structure may be raised back to block pathing. Friendly units standing on the structure are pushed the nearest edge when the structure is raised. Enemy units standing on top prevent the structure from being raised.

The structure's attributes, other than blocking movement, are not changed when it is lowered.

We can now call down supply depots straight from orbit due to our new understanding of protoss architecture. Key point joints have been added to the supply depot's structure, allowing the supply depot to survive the violent turbulence of breaking through an atmosphere. Now an SCV simply has to place a beacon, and the crew on the Hyperion will handle the rest.
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All structures repair themselves to 50% life. All structure fires are automatically put out.

This all-in-one safety system automatically dispatches robotic drones to put out any fires and perform basic repairs on damaged structures. Although these drones are effective at doing basic repairs, they do not have a strong enough AI to perform the more delicate repairs needed to restore a structure past half life.[6]